Diplomatic Courier

Diplomatic Courier is a 1952 film directed by Henry Hathaway. It stars Tyrone Power and Patricia Neal.

Sam ignores him because he is apparently being tailed by two men. Mike boards the same train and sits near a woman Sam seems to know. In a tunnel, Mike is shocked to see the two men throw Carews body off the train.Col. Cagle and Sgt. Guelvada of the US Army tersely interrogate Mike as to what went wrong. They believe the womans involved and order him to travel to Trieste to find her. Guelvada goes along. ........

Source: Wikipedia